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Dr Constantinos Anastassiades

Photo of Dr Constantinos Anastassiades


  • Senior Consultant, Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital
  • Senior Consultant, National University Cancer Institute, Singapore
  • Assistant Professor, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore


MBBS (Lond), Board Cert (American Board of Internal Medicine), Board Cert (American Board of Internal Medicine-Gastroenterology), FAMS (Gastroenterology), FACP, FACG, FASGE



Clinical Disciplines/Programmes:

Gastroenterology & Hepatology, Medicine

Special Interests:

Advanced diagnostic and therapeutic endoscopy, including Endoscopic Retrograde, Cholangiopancreatography (ERCP) & Endoscopic Ultrasound (EUS), Gastrointestinal cancer, Pancreatic and biliary disorders, General Gastroenterology, Endoscopic training, research, and service development


Dr Constantinos Anastassiades is a Senior Consultant in the Division of Gastroenterology & Hepatology at National University Hospital. Prior to joining NUH, he was Head of the Division of Gastroenterology & Hepatology at Khoo Teck Puat Hospital (KTPH) in Singapore.

He obtained his medical degree from the University of London and completed his medical internship at the University College London Hospital, London, UK. After successfully completing the United States Medical Licensing Examinations, he was certified by the US Educational Commission for Foreign Medical Graduates (ECFMG) and selected for training in Internal Medicine and then Gastroenterology at the Mayo Clinic, Rochester, Minnesota, USA and the University of Michigan, Ann Arbor, Michigan, USA. Following his certification by the American Board of Internal Medicine and Gastroenterology, he was appointed as the Michael Sivak Jr. Fellow in Advanced Therapeutic Endoscopy and Endoscopic Research in Cleveland, Ohio, USA, where he subsequently worked as an Assistant Professor of Medicine, Attending Physician and Consultant Gastroenterologist at Case Western Reserve University. He relocated to Singapore in 2014.

He has been actively involved in research in the area of Endoscopy and presented his work in several national and international meetings. He has authored a book chapter and various journal publications and has served as invited faculty in endoscopy courses in the United States organized by the American Society for Gastrointestinal Endoscopy (ASGE) as well as in local and international meetings in Singapore.

Dr Anastassiades has an ongoing interest in endoscopic training, including endoscopic retrograde cholangiopancreatography (ERCP) for gastroenterologists and surgeons. He has led initiatives for the development of high-quality local manpower and advanced endoscopy skillsets to meet clinical service needs in the public healthcare sector in Singapore.

He is keenly interested in patient welfare and has received multiple Service Champion Awards during his time in the public healthcare sector in Singapore. He has additionally been awarded local and international professional distinctions including Fellowship in the American College of Physicians, American College of Gastroenterology, American Society for Gastrointestinal Endoscopy, and the Academy of Medicine, Singapore.

After spending 15 years in the United Kingdom and the United States, he and his wife, who is also a medical doctor, decided to relocate and raise their family in Singapore closer to his wife’s home. Dr Anastassiades enjoys the study of Chinese language, history and culture and, although still far from fluent, has reached an intermediate level of proficiency in Mandarin Chinese.


  • Presidential Poster Award, The American College of Gastroenterology Annual Scientific Meeting, USA, 2020
  • Long Service Award, Khoo Teck Puat Hospital, Singapore, 2019
  • Chinese Proficiency Test HSK Level 4 /汉语水平考试(四级)合格,People's Republic of China, 2018
  • Service Champion Award, Khoo Teck Puat Hospital, Singapore, 2015, 2016, 2017, 2018
  • Patients’ Choice Award, USA, 2012

Journals & Publications

  1. Koo CS, Anastassiades CP, Ho KY. Changing perspectives in the training of endoscopic ultrasonography in Asia. World J Gastroenterol 2021; [Epub ahead of print]
  2. Yip BCH, Sayeed Sajjad H, Wang JX, Anastassiades CP. Endoscopic treatment modalities and outcomes in non-variceal upper gastrointestinal bleeding. World J Gastrointest Endosc 2020;12:72-82.
  3. Wee E, Anastassiades C, Yip BC. Endoscopic treatment of a pancreaticopleural fistula associated with a tension hydrothorax. J Dig Dis. 2017;18:309-312.
  4. Anastassiades CP, Wong RCK. ERCP complications. In: Tham TCK, Collins JSA, Soetikno R. (Eds.). Gastrointestinal Emergencies. Wiley–Blackwell, October 2015. Book Chapter.
  5. Menees SB, Elliott E, Govani S, Anastassiades C, Schoenfeld P. Adherence to recommended intervals for surveillance colonoscopy in average-risk patients with 1 to 2 small (<1 cm) polyps on screening colonoscopy. Gastrointest Endosc 2014;79:551-7.
  6. Anastassiades CP, Faulx AL. Acute pancreatitis complicated by an abdominal mass. Gastrointest Endosc 2013;78:541-2.
  7. Anastassiades CP, Saxena A. Precut needle-knife sphincterotomy in advanced endoscopy fellowship. Gastrointest Endosc 2013;77:637-40.
  8. Anastassiades CP, Salah W, Pauli EM, Marks JM, Chak A. Cap-assisted ERCP with a forward-viewing gastroscope as a rescue endoscopic intervention in patients with Billroth II anatomy. Surg Endosc 2013;27:2237.
  9. Anastassiades CP, Li M, Joshi B, Komarck CM, Piraka C, Elmunzer BJ, Turgeon DK, Johnson TD, Appelman H, Beer DG, Wang TD. Affinity peptide for targeted detection of dysplasia in Barrett's esophagus. Gastroenterology 2010;139:1472-80.
  10. Anastassiades CP, Baron TH, Wong Kee Song LM. Endoscopic clipping for the management of gastrointestinal bleeding. Nat Clin Pract Gastroenterol Hepatol 2008;5:559-68.

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